What a mess. I’d upgraded my work laptop from Windows 10 to Windows 11, and discovered some strangeness with OpenSSH agent forwarding when using Windows’ built-in ssh client. Mostly, I use ssh through WSL2, but VS Code obviously runs on the Windows layer, meaning that agent forwarding has to Just Work. Which it did not. I kept getting this sort of nonsense when trying to use a forwarded agent;

Turns out it’s been nearly a year since I’ve posted. Whoops.

MetalLB is a load balancer for Kubernetes that allows direct external IP ingress into Kubernetes clusters for access to pods and services. Whereas a product like Multus adds interfaces to pods directly (thus giving them layer 2 access to that network), MetalLB implements the Kubernetes LoadBalancer kind, permitting services to be accessed directly from outside the cluster on their own IP addresses.

Multus is a CNI plugin which allows containers to have additional interfaces added to them. It supports using macvlan to add interfaces to ovs switches, and fits the need quite nicely.

With Kubernetes, containers are considered to be transient. But obviously there’s a pretty strong need for being able to store permanent information. This is where Persistent Volumes and Persistent Volume Claims come in.

After having used CentOS for quite some time on my home server, I finally decided I’d had enough and wanted to change over to Ubuntu 20.04 instead. There were a few reasons for this - but critically because of the support drop for CentOS 8, and how far CentOS tends to run behind fast-moving projects like containerization.